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s INPUT OFFSET VOLTAGE : 3mV max. OVERTEMPERATURE

s FREQUENCY COMPENSATION WITH ASINGLE 30pF CAPACITOR (C1)

s OPERATION FROM 5V to 15Vs LOW POWER CONSUMPTION :

50mW AT 15Vs

CONTINUOUS SHORT-CIRCUIT PROTEC-TIONs OPERATION AS A COMPARATOR WITH

DIFFERENTIAL INPUTS AS HIGH AS 30Vs NO LATCH-UP WHEN COMMON-MODE

RANGE IS EXCEEDEDs SAME PIN CONFIGURATION AS THE

LM101A

DESCRIPTION

The UA748 is a general purpose operational am-plifier built on a single silicon chip. The resultingclose match and tight thermal coupling gives lowoffsets and temperature drift as well as fast recov-ery from thermal transients.

s Short-circuit protections Offset voltage null capabilitys Large common-mode and differential voltage

rangess Low power consumptions No latch-upThe unity-gain compensation specified makes thecircuit stable for all feedback configurations, evenwith capacitive loads. However, it is possible tooptimize compensation for best high frequencyperformance at any gain. The low power dissipa-tion permits high voltage operation and simplifiespackaging in full-temperature range systems.

ORDER CODE

N = Dual in Line Package (DIP)D = Small Outline Package (SO) - also available in Tape & Reel (DT)

PIN CONNECTIONS (top view)

Part Number Temperature RangePackage

N D

UA748C 0C, +70C

UA748I -40C, +105C

UA748M -55C, +125C

Example : UA748CN

NDIP8

(Plastic Package)

DSO8

(Plastic Micropackage)

1

2

3

4

8

6

5

7

1 - Offset null 1/frequency compensation2 - Inverting input3 - Non-inverting input

4 - VCC-

5 - Offset null 26 - Output

7 - VCC+

8 - Frequency compensation

UA748PRECISION SINGLE OPERATIONAL AMPLIFIER

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UA748

SCHEMATIC DIAGRAM

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter UA748M UA748I UA748C Unit

VCC Supply voltage 22 V

Vid Differential I nput Voltage 30 V

Vi Input Voltage 15 V

Ptot Power Dissipation 1)

1. Power dissipation must be considered to ensure maximum junction temperature (Tj) is not exceeded.

500 mW

Output Short-circuit Duration InfiniteToper Op erating Free-air Temperature Range -55 to +1 25 -40 to +105 0 to +70 C

Tstg Storage Temperature Range -65 to +150 C

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UA748

ELECTRICAL CHARACTERISTICS

VCC

= 15V, Tamb

= +25C, C1 = 30pF (unless otherwise specified)

Symbol ParameterUA748I/M UA748C

UnitMin. Typ. Max. Min. Typ. Max.

Vio

Input Offset Voltage (Rs 10k)

Tamb = +25C

Tmin Tamb Tmax

0.7 23

2 7.510

mV

Iio

Input Offset CurrentTamb = +25C

Tmin Tamb Tmax

1.5 1020

2 5070

nA

Iib

Input Bias CurrentTamb = +25C

Tmin Tamb Tmax

25 7510

70 250300

nA

Avd

Large Signal Voltage Gain (Vo = 10V, RL = 2k)Tamb = +25C

Tmin Tamb Tmax

5025

100 2515

100 V/mV

SVR

Supply Voltage Rejection Ratio (Rs 10k)

Tamb = +25C

Tmin Tamb Tmax

8080

96 7070

96 dB

ICC

Supply Current, no loadTamb = +25C

Tmin Tamb Tmax

1.8 33

1.8 33

mA

Vicm

Input Common Mode Voltage Range (VCC = 20V)

Tamb = +25C

Tmin Tamb Tmax

1515

1515

V

CMRCommon Mode Rejection Ratio (RS

10k)

Tamb = +25C

Tmin Tamb Tmax

8080

96 7070

96 dB

IOS Output short Circuit Current 10 30 50 10 30 50 mA

Vopp

Output Voltage Swing (VCC = 15V)

Tamb = +25C RL = 10k

RL = 2k

Tmin Tamb Tmax RL = 10k

RL = 2k

12101210

1413

12101210

1413 V

SRSlew Rate 1)

Vi = 10V, RL = 2k, CL = 100pF, unity Gain

1. May be improved up to 10V/s in inverting amplifier configuration .

0.25 0.5 0.25 0.5V/s

trRise Time

Vi

= 20mV, RL

= 2k, CL

= 100pF, unity Gain 0.3 0.3s

KovOvershoot

Vi = 20mV, RL = 2k, C L = 100pF, unity G ain 5 5%

Zi Input Impedance (VCC = 15V) 1.5 4 1.5 4 M

Ro Output Resistance (VCC = 15V) 75 75

GBPGain Bandwith Product

Vi =10mV, RL = 2k, CL = 100pF, f =100kHz 0.5 1 0.5 1MHz

THDTotalH armonic Distortion

f =1kHz, Av =20dB, RL =2k, Vo =2Vpp, CL = 100pF 0.015 0.015%

DIio

Input Offset Current Drift25C TmaxTmin Tamb Tmax

1020

100200

1020

300600

pA/C

DVio

Input Offset Voltage Drift

Tmin Tamb Tmax 3 15 6 30 V/

C

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UA748

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UA748

SINGLE POLE COMPENSATION

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UA748

PACKAGE MECHANICAL DATA

8 PINS - PLASTIC DIP

Dim.Millimeters Inches

Min. Typ. Max. Min. Typ. Max.

A 3.32 0.131

a1 0.51 0.020

B 1.15 1.65 0.045 0.065

b 0.356 0.55 0.014 0.022

b1 0.204 0.304 0.008 0.012

D 10.92 0.430

E 7.95 9.75 0.313 0.384

e 2.54 0.100

e3 7.62 0.300

e4 7.62 0.300

F 6.6 0260

i 5.08 0.200L 3.18 3.81 0.125 0.150

Z 1.52 0.060

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UA748

PACKAGE MECHANICAL DATA

8 PINS - PLASTIC MICROPACKAGE (SO)

Dim.Millimeters Inches

Min. Typ. Max. Min. Typ. Max.

A 1.75 0.069

a1 0.1 0.25 0.004 0.010

a2 1.65 0.065

a3 0.65 0.85 0.026 0.033

b 0.35 0.48 0.014 0.019

b1 0.19 0.25 0.007 0.010

C 0.25 0.5 0.010 0.020

c1 45 (typ.)

D 4.8 5.0 0.189 0.197

E 5.8 6.2 0.228 0.244

e 1.27 0.050

e3 3.81 0.150

F 3.8 4.0 0.150 0.157

L 0.4 1.27 0.016 0.050

M 0.6 0.024

S 8 (max.)

b

e3

A

a2

s

L

C

E

c1a3

b1

a1

DM

8 5

1 4

F

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